As is the case with most grave mistakes, this one was made by intelligent men, for the very best of reasons.
The supreme court made a grave mistake with this decision.
Although, now she came to think about it, maybe such caution had been a grave mistake.
A grave mistake, however much fun it had been at the time.
Love for anything other than oneself or one's child was a grave mistake.
If you ask me, putting those things around was a grave mistake.
How could the police have made such a grave mistake and failed to cut off his retreat?
Had it been a grave mistake that brought him to this place?
And surely it's a grave mistake to bring him here.
That is why I regard this as a grave mistake.
For the West to become embroiled with ground troops would be a disastrous mistake.
But that would be a disastrous mistake, morally and politically.
I think she made the disastrous mistake of falling in love with him.
"In truth, I have made a series of disastrous mistakes, including my involvement with those girls."
This was a disastrous mistake, as most of us soon realised.
If so, he is making a disastrous mistake, one that will take many down with him.
This was a disastrous mistake, but it is in the process of being corrected.
Once they make a few disastrous mistakes, they'll prefer to use our people.
As a result, the country was spared what would almost certainly have been a disastrous mistake.
Governor Bush's move toward the extreme religious right is now generally seen as a disastrous mistake.